The race is scheduled to start about 7:55 a.m. on Route 110 between the Pentagon and Arlington Memorial Drive. Thousands of people then are expected to run on a 26.2-mile course through Arlington and the District.

During the marathon, Crystal City is slated to have an all-day family party with moon bounces, face paintings and crafts. Rosslyn also is set to throw a finish festival with live music and a beer garden.

The Arlington County Police Department, Virginia State Police and Pentagon Force Protection Agency plan to close the following roads, starting at 3:30 a.m.: